Payment to founding members under TRA Payment To Founding Members Under Tax Sharing Arrangement Payment to founding members under tax sharing arrangement. Accounts Receivable, Credit Loss Expense (Reversal) Accounts Receivable, Credit Loss Expense (Reversal) Related Party Transactions [Abstract] Related Party Transactions [Abstract] Advertising operating costs Advertising Operating Costs [Member] Advertising Operating Costs [Member] Deferred Income Tax Assets, Net Deferred Income Tax Assets, Net Outstanding Balance Debt Instrument, carrying value Long-Term Debt, Gross Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Regal Regal Entertainment Group [Member] Regal entertainment group. Debt Instrument Debt Instrument [Axis] On-screen advertising time to satisfy agreement obligations, in seconds Length Of On Screen Advertising Time To Satisfy Agreement Obligations The length of on-screen advertising time to satisfy agreement obligations. Property and equipment Property, Plant and Equipment, Gross Payment of dividends Payments of Ordinary Dividends, Common Stock Debt Instrument Debt Instrument, Fair Value Disclosure Available-for-sale Securities, Gross Unrealized Loss Gross unrealized losses related to individual securities Available-for-Sale Securities, Gross Unrealized Loss Decrease in ending balance of APIC Additional Paid in Capital Accrued bonus Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Bonuses Common membership units surrendered, compensation for lost operating income Common Membership Units Surrendered Compensation For Lost Operating Income For Divested Theaters Term Common membership units surrendered, compensation for lost operating income for divested theaters, term. Guarantee obligations amount paid Guarantee Obligations Amount Paid Guarantee obligations amount paid. Basis spread on variable rate, percent Debt Instrument, Basis Spread on Variable Rate Depreciation expense Depreciation Schedule of Minimum Lease Payments Under Noncancelable Operating Leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Deferred tax assets, net Deferred Tax Assets, Net Operating Lease, Weighted Average Discount Rate, Percent Operating Lease, Weighted Average Discount Rate, Percent Interest Rate Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Cinemark Cinemark [Member] Cinemark Other Other Noncash Income (Expense) Current State Current State and Local Tax Expense (Benefit) Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Financing Receivable, after Allowance for Credit Loss, Current Current portion of notes receivable - founding members Financing Receivable, after Allowance for Credit Loss, Current Shares excluded from the calculation of diluted weighted average shares Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Document Information [Line Items] Document Information [Line Items] Common Membership Units Returned Common Membership Units Returned Common membership units returned. Distributions to founding members Payments of Distributions to Affiliates Income tax examination, year under examination Income Tax Examination, Year under Examination Equity Component [Domain] Equity Component [Domain] Subsequent Event Type Subsequent Event Type [Domain] Term of increase in payment percentage per theater patron Period Of Increase In Payment On Theater Patron Period of increase in payment on per theater patron. Cumulative Principal Amount Paid on Term Loan Cumulative Principal Amount Paid on Term Loan Cumulative Principal Amount Paid on Term Loan Computer hardware and software Computer Hardware And Software [Member] Computer hardware and software. Ownership [Axis] Ownership [Axis] Investment, Name Investment, Name [Domain] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Related Party [Domain] Related Party [Domain] Increase To Re Measurement Of Payable To Founding Members Under Tax Sharing Agreement Increase To Re Measurement Of Payable To Founding Members Under Tax Sharing Agreement Increase To Re Measurement Of Payable To Founding Members Under Tax Sharing Agreement Deferred tax assets, tax basis notes receivable Deferred Tax Assets Notes Receivable Deferred tax assets notes receivable. Founding Members Founding Members [Member] Founding Members Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Weighted average exercise price, Forfeited (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Advertising Inventory Advertising Inventory [Member] Advertising inventory. Valuation Allowance by Deferred Tax Asset [Axis] Valuation Allowance by Deferred Tax Asset [Axis] Plan Name Plan Name [Domain] Total non-current liabilities Liabilities, Noncurrent Liabilities, Noncurrent Entity Address, State or Province Entity Address, State or Province NCM LLC income taxes Income Tax Reconciliation Income Tax Benefit Of Affiliate Income Tax Reconciliation Income tax Benefit of Affiliate OTHER COMPREHENSIVE INCOME, NET OF TAX: Other Comprehensive Income (Loss), Net of Tax [Abstract] Weighted average remaining contractual life, Outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term One Founding Members [Member] One Founding Members [Member] One founding members. Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] Fair Value, Separate Account Investment [Line Items] Award Type [Axis] Award Type [Axis] Operating Lease, Liability, Current Short-term Lease Commitment, Amount Operating Lease, Liability, Current RelatedPartyTRAPayment,AMC RelatedPartyTRAPayment,AMC RelatedPartyTRAPayment,AMC Options, Expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested Options Forfeited, Number of Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested Options Forfeited, Number of Shares Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Long-term debt, net of debt issuance costs of $0.0 and $10.5, respectively Carrying value of long-term debt Long-Term Debt, Excluding Current Maturities Related Party Costs Theater access fee Related Party Costs Total liabilities Total liabilities Liabilities Operating Lease, Weighted Average Remaining Lease Term Operating Lease, Weighted Average Remaining Lease Term Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Cumulative Effect Adjustment for Adoption of ASU 2016-13 Cumulative Effect Adjustment for Adoption of ASU 2016-13 Cumulative Effect Adjustment for Adoption of ASU 2016-13 Costs and Other Reimbursement Costs and Other Reimbursement Costs and Other Reimbursement Tax Year 2016 Tax Year 2016 [Member] AccAmort,InangibleAsset,Affiliates AccAmort,InangibleAsset,Affiliates,Disposals AccAmort,InangibleAsset,Affiliates,Disposals Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Fair Value Hierarchy Fair Value Hierarchy and NAV [Domain] Revolving credit facility 2018 Revolving Credit Facility [Member] Percentage of cash savings related to taxes Percentage Of Cash Savings Related To Taxes Percentage of cash savings related to taxes. Amounts due to founding members, net Amounts due to founding members, net Amounts due to founding members, net Document Type Document Type Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Estimated useful life Property, Plant and Equipment, Useful Life Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Weighted average grant-date fair value, Non-vested, beginning balance (in dollars per share) Weighted average grant-date fair value, Non-vested, ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Accounting Standards Update 2014-09 Accounting Standards Update 2014-09 [Member] Deferred income tax expense Deferred Income Tax Expense (Benefit) DebtInstrumentBasisSpreadOnVariableRateIncrease DebtInstrumentBasisSpreadOnVariableRateIncrease DebtInstrumentBasisSpreadOnVariableRateIncrease Cumulative Effect of New Accounting Principle in Period of Adoption Cumulative Effect Adjustment for Adoption of ASU 2014-09 Cumulative Effect Adjustment for Adoption of ASU 2014-09 Other Intangible Assets, Net Disposals of Intangible Assets, Net Disposals of Intangible Assets, Net Founding member advertising revenue from beverage concessionaire agreements Founding Member Advertising Revenue From Beverage Concessionaire Agreements [Member] Founding member advertising revenue from beverage concessionaire agreements. Number of customers contributing to more than 10% of revenue Number Of Customers Contributing To More Than Ten Percent Of Revenue Number of customers contributing to more than 10% of revenue. Contract with Customer, Asset and Liability Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Dividends declared not requiring cash in the period Increase Decrease In Dividends Not Requiring Cash Increase decrease in dividends not requiring cash. Units of Partnership Interest, Amount - AMC Units of Partnership Interest, Amount - AMC Units of Partnership Interest, Amount - AMC Accounts Receivable, Allowance for Credit Loss, Writeoff Accounts Receivable, Allowance for Credit Loss, Writeoff Debt Disclosure [Abstract] Debt Disclosure [Abstract] Income Statement Location Income Statement Location [Axis] Trade accounts Trade Accounts Receivable [Member] Accrued expenses Total accrued expenses Accrued Liabilities, Current Interest income Interest and Other Income Less: current portion of debt Long-Term Debt, Current Maturities Additions Finite-Lived Intangible Assets Acquired On or After April 15, 2017 [Member] Debt Instrument Redemption Period Six [Member] Debt instrument redemption period six. Accounting Policies [Abstract] Accounting Policies [Abstract] Interest on borrowings Interest Expense, Debt Variable Lease, Cost Variable Lease, Cost Cumulative effect for change in accounting principle Cumulative Effect of New Accounting Principle in Period of Adoption (Deprecated 2020) NetworkAffiliateTransactionsRelatedParty NetworkAffiliateTransactionsRelatedParty NetworkAffiliateTransactionsRelatedParty Schedule of Valuation and Qualifying Accounts Schedule Of Valuation And Qualifying Accounts Table [Text Block] Schedule of Valuation And Qualifying Accounts [Table Text Block] Municipal Bonds Municipal Bonds [Member] Number of restricted stock and restricted stock units expected to vest, after consideration of expected forfeitures of shares Share Based Compensation Arrangement By Share Based Payment Award Other Than Options Expected To Vest After Consideration Of Expected Forfeitures Outstanding Number Share based compensation arrangement by share based payment award other than options expected to vest after consideration of expected forfeitures outstanding number. Schedule of Components of Income Tax Expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Theater access fees and revenue share, net of beverage revenues    and other encumbered theater payments Theater Access Fees Net Of Beverage Revenues And Other Encumbered Theaters Payments Theater access fees net of beverage revenues and other encumbered theaters payments. Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Weighted average remaining period over which unrecognized compensation costs will be recognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Memorandum Of Understanding To Effectuate Aspects Of Final Judgment Memorandum Of Understanding To Effectuate Aspects Of Final Judgment [Member] Memorandum of understanding to effectuate aspects of Final Judgment. Weighted average remaining contractual life, Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Summary of Intangible Asset's Activity Schedule of Finite-Lived Intangible Assets [Table Text Block] us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 Estimated Fair Values of Company's Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Acquisition of a business Payments to Acquire Businesses, Gross Short-term marketable securities Aggregate Fair Value - Short term marketable securities Available-for-Sale Securities, Current Entity Registrant Name Entity Registrant Name Membership units exchangeable into common stock ratio Membership Units Conversion Ratio Membership units conversion ratio. Gain on reduction of payable to founding members under tax receivable agreement Gain Loss On Reduction Of Payable To Founding Members Under Tax Receivable Agreement Gain (loss) on reduction of payable to founding members under tax receivable agreement. Change in deferred tax asset related to Tax Cuts and Jobs Act Tax Cuts And Jobs Act Of 2017, Change In Tax Rate, Deferred Tax Asset, Income Tax Expense (Benefit) Tax Cuts And Jobs Act Of 2017, Change In Tax Rate, Deferred Tax Asset, Income Tax Expense (Benefit) Subsequent Event Subsequent Events [Text Block] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Sale of membership units (in shares) Sale Of Membership Units, Number Of Shares Sold Sale Of Membership Units, Number Of Shares Sold Employee Benefit Plans Retirement Benefits [Text Block] Units of Partnership, Amount - Cinemark Units of Partnership, Amount - Cinemark Units of Partnership, Amount - Cinemark Leases [Abstract] Leases [Abstract] Total equity/(deficit) Total equity/(deficit) Balance Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Deferred Tax Assets, Operating Loss Carryforwards Net operating losses Deferred Tax Assets, Operating Loss Carryforwards Unaudited Consolidated Financial Statements and Corresponding Footnotes for Prior Periods Adjusted from Amounts Previously Reported to Reflect Correction of Error Schedule of Error Corrections and Prior Period Adjustments [Table Text Block] Consolidation Consolidation, Policy [Policy Text Block] NCM, Inc. investment in NCM LLC Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent Minimum Minimum [Member] 2022 Revolving Credit Facility 2022 Revolving Credit Facility [Member] 2022 Revolving Credit Facility Entity Emerging Growth Company Entity Emerging Growth Company Common stock, par value (in usd per share) Common Stock, Par or Stated Value Per Share Proceeds from Issuance of Secured Debt Proceeds from Issuance of Secured Debt Share-based compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Investment, Name Investment, Name [Axis] Debt issuance costs Debt Issuance Costs, Capitalized During Period Debt Issuance Costs, Capitalized During Period Fair Value Measurements Fair Value Disclosures [Text Block] Entity File Number Entity File Number Trading Symbol Trading Symbol Nonoperating Gains (Losses) Nonoperating Gains (Losses) Intangible Assets Intangible Assets Disclosure [Text Block] 2021 Finite-Lived Intangible Asset, Expected Amortization, Year Four Accrued interest Interest Payable, Current Deferred revenue Deferred Revenue, Current Redemption of Senior Notes due 2021 Repayments of Unsecured Debt Number of restricted shares and restricted stock units, Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Options contractual term Share Based Compensation Arrangement By Share Based Payment Award Award Contractual Term Share Based Compensation Arrangement By Share Based Payment Award Award Contractual Term Tax Year 2020 Tax Year 2020 [Member] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Concentration Risk Benchmark Concentration Risk Benchmark [Axis] Amounts due from founding members, net Due from Related Parties, Current Estimates Use of Estimates, Policy [Policy Text Block] Leasing Arrangement [Member] Leasing Arrangement [Member] Advertising operating costs Marketing and Advertising Expense Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Income Taxes Income Tax Disclosure [Text Block] Weighted-average interest rate Debt, Weighted Average Interest Rate Other Other Receivable [Member] Other receivable. Credit Facility Credit Facility [Domain] Basic (in usd per share) (Loss) Earnings per NCM, Inc. share, basic Earnings Per Share, Basic Common Membership Units Issued Common membership units issued (in shares) Common Membership Units Issued Common membership units issued. Percentage of increase in payment per digital screen and digital cinema equipment Percentage Of Increase In Payment Per Digital Screen And Digital Cinema Equipment Percentage of increase in payment per digital screen and digital cinema equipment. Payment terms Revenue, Performance Obligation, Payment Terms Revenue, Performance Obligation, Payment Terms Construction in progress Construction in Progress, Gross Total amounts due to founding members, net Related Party Transaction, Due from (to) Related Party New Accounting Pronouncements or Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] Regional Advertising Revenue [Member] Regional Advertising Revenue [Member] Regional Advertising Revenue [Member] Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Noncancelable contract terms Noncancelable Contract Terms Noncancelable contract terms. Common Membership Unit Adjustment Received Common Membership Unit Adjustment Received Common Membership Unit Adjustment Received 2018 Revolving Credit Facility 2018 Revolving Credit Facility [Member] 2018 Revolving Credit Facility Ownership [Domain] Ownership [Domain] Cumulative Effect Adjustment for Adoption of ASU 2016-13 to Retained Earnings Cumulative Effect Adjustment for Adoption of ASU 2016-13 to Retained Earnings Cumulative Effect Adjustment for Adoption of ASU 2016-13 to Retained Earnings Entity Interactive Data Current Entity Interactive Data Current Aggregate percentage of theater access fee paid Percentage Of Theater Access Fee Paid Percentage of theater access fee paid. Unrecognized tax benefits including income tax accrued interest and penalties Unrecognized tax benefits including income tax accrued interest and penalties Unrecognized Tax Benefits Including Income Tax Penalties And Interest Accrued Unrecognized tax benefits including income tax penalties and interest accrued. Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Number of additional restricted stock issued under satisfying maximum performance criteria Number Of Additional Restricted Stock Issued Under Satisfying Maximum Performance Criteria Number of additional restricted stock issued under satisfying maximum performance criteria. Cinemark Cinemark Holdings Inc [Member] Cinemark holdings, Inc. Bad-debt expense Bad-debt expense Bad-debt expense Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] AggregateRemainingofPrincipal,Notes2028 AggregateRemainingofPrincipal,Notes2028 AggregateRemainingofPrincipal,Notes2028 Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units, Tax Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units, Tax Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units, Tax Schedule of Share-Based Compensation Costs Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Receivable Type Receivable Type [Axis] Percentage Of Customer Contributing To More Than Ten Percent Of Revenue Percentage Of Customers Contributing To More Than Ten Percent Of Revenue Percentage Of Customers Contributing To More Than Ten Percent Of Revenue Share-based compensation issued, value Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture ContentSegmentSeconds ContentSegmentSeconds ContentSegmentSeconds Class of Stock [Axis] Class of Stock Class of Stock [Axis] Thereafter Long-Term Debt, Maturity, after Year Five Income Taxes Income Tax, Policy [Policy Text Block] Number of votes per common share Number Of Votes Per Common Share Number of votes per common share. Marketable Securities Marketable Securities, Policy [Policy Text Block] Changes in Equity Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block] CURRENT ASSETS: Assets, Current [Abstract] Unrecognized tax benefits, income tax penalties and interest expense Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Other investments Cost Method Investments Retained earnings (distributions in excess of earnings) Retained Earnings (Accumulated Deficit) Debt Covenant Period [Domain] Debt Covenant Period [Domain] [Domain] for Debt Covenant Period [Axis] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Scenario, Unspecified [Domain] Scenario [Domain] Fair Value, Measurements, Recurring [Member] Fair Value, Recurring [Member] Weighted average exercise price, Exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price On-screen advertising time which founding members have right to purchase, in seconds Length Of On Screen Advertising Time Which Founding Members Have Right To Purchase Length of on-screen advertising time which founding members have a right to purchase Related Party Transactions Related Party Transactions Disclosure [Text Block] Payment To Founding Members Under The Tax Receivable Agreement Payment To Founding Members Under The Tax Receivable Agreement Payment To Founding Members Under The Tax Receivable Agreement 2022 Operating Leases, Future Minimum Payments, Due in Five Years Document Fiscal Year Focus Document Fiscal Year Focus Valuation Allowance Reversed Valuation Allowance Reversed [Member] Valuation Allowance Reversed Fair Value, Hierarchy Fair Value Hierarchy and NAV [Axis] 2018 Operating Leases, Future Minimum Payments Due, Next 12 Months Long-term Marketable Securities [Member] Long Term Marketable Securities [Member] Long-term marketable securities. Total current income tax (benefit)/expense Current Income Tax Expense (Benefit) Two Founding Members [Member] Two Founding Members [Member] Two founding members. Weighted average exercise price, Vested and Expected to Vest (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Reversal of accrued interest and penalties Reversal Of Accrued Interest And Penalties Reversal of accrued interest and penalties. 2007 Plan and 2016 Plan [Member] Two Thousand Seven Equity Incentive Plan And Two Thousand Sixteen Equity Incentive Plan [Member] Two thousand seven equity incentive plan and two thousand sixteen equity incentive plan. Share-based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost Local Advertising Revenue [Member] Local Advertising Revenue [Member] Local Advertising Revenue [Member] Document Information [Table] Document Information [Table] Common stock, shares outstanding (in shares) Balance, (in shares) Balance, (in shares) Common Stock, Shares, Outstanding Total deferred income tax expense Deferred Income Tax Expense Benefit Gross Deferred income tax expense benefit gross. Property, Plant and Equipment, Type Long-Lived Tangible Asset [Axis] Debt Issuance Costs, Current, Net Debt Issuance Costs, Current, Net Noncontrolling Interest, Increase from Subsidiary Equity Issuance Noncontrolling Interest, Increase from Subsidiary Equity Issuance Debt Instrument, Net Total Leverage Ratio Debt Instrument, Net Total Leverage Ratio Debt Instrument, Net Total Leverage Ratio Income tax expense Consolidated net income, tax Total income tax provision Income Tax Expense (Benefit) Deferred Tax Assets, Valuation Allowance Valuation allowance Deferred Tax Assets, Valuation Allowance Schedule of Fiscal Year Ends Schedule Of Fiscal Year Ends Table [Text Block] Schedule of fiscal year ends. Proceeds from Sales of Assets, Investing Activities Proceeds from Sales of Assets, Investing Activities Entity Public Float Entity Public Float Number of theaters required to transfer advertising rights Number Of Theaters Required To Transfer Advertising Rights Number of theaters required to transfer advertising rights. Related Party Founding Members Related Party Founding Members [Member] Related Party Founding Members [Member[ Advertising operating costs Costs of goods and services sold Cost of Goods and Services Sold Debt Covenant Period [Axis] Debt Covenant Period [Axis] Debt Covenant Period [Axis] Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less: Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Debt issuance costs, net Debt Issuance Costs, Line of Credit Arrangements, Net Deferred tax assets Long-term deferred tax assets, net of valuation allowance Deferred Tax Assets, Net of Valuation Allowance, Noncurrent (Deprecated 2022) Accounting Policies [Table] Accounting Policies [Table] Accounting policies. Accounts Receivable Accounts Receivable [Member] Common stock, $0.01 par value; 260,000,000 and 175,000,000 shares authorized, 128,402,636 and 80,626,889 issued and outstanding, respectively Common Stock, Value, Issued Debt Instrument, Name Debt Instrument, Name [Domain] Term loans - first tranche Term Loan [Member] Term loan. 2007 Plan [Member] Two Thousand Seven Equity Incentive Plan [Member] Two thousand seven equity incentive plan. Amortized Cost Basis Available-for-Sale Securities, Amortized Cost Basis Cash and cash equivalents at beginning of period Cash, cash equivalents and restricted cash at end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents CURRENT LIABILITIES: Liabilities, Current [Abstract] Proceeds from Stock Options Exercised Proceeds from Stock Options Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Weighted average remaining contractual life, Vested and Expected to Vest Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Change in effective ownership Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Contract with Customer, Liability, Current Contract with Customer, Liability, Current Contract with Customer, Liability, Current Reduction in payable to founding members under the tax receivable agreement Reduction In Payable To Founding Members Under The Tax Receivable Agreement Reduction in payable to founding members under the tax receivable agreement. Accounting Standards Update 2016-02 [Member] Accounting Standards Update 2016-02 [Member] Cinemark and Regal Cinemark and Regal [Member] Cinemark and Regal Income Statement Location Income Statement Location [Domain] Common Membership Units [Member] Common Units [Member] Common units. Amendment Flag Amendment Flag Weighted average remaining life Finite-Lived Intangible Asset, Useful Life Operating Lease, Cost Operating Lease, Cost Investment Type Investment Type [Axis] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] RelatedPartyTRAPayment,Cinemark RelatedPartyTRAPayment,Regal RelatedPartyTRAPayment,Cinemark RelatedPartyTRAPayment,Cinemark Net cash used in operating activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Number of advertising agency groups contributing to more than 10% of outstanding gross receivable balance Number Of Advertising Agency Groups Contributing To More Than Ten Percent Of Outstanding Gross Receivables Number of advertising agency groups contributing to more than 10% Of outstanding gross receivables. Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Other assets Other Assets, Noncurrent Options, Exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Senior secured leverage ratio Senior Secured Leverage Ratio Senior secured leverage ratio. Troubled Debt Restructuring, Debtor, Subsequent Periods [Axis] Troubled Debt Restructuring, Debtor, Subsequent Periods [Axis] Repayment Notes due 2028 Proceeds from Issuance of Senior Long-Term Debt 2016 Equity Incentive Plan [Member] 2016 Equity Incentive Plan [Member] 2016 Equity Incentive Plan Gain (loss) from equity transaction investment due to change in ownership interest in NCM LLC Gain Loss From Equity Transaction Due To Change In Ownership Interest Gain (loss) from equity transaction due to change in ownership interest. Schedule of Related Party Transactions Schedule of Related Party Transactions [Table Text Block] Schedule of Useful Lives Schedule Of Useful Lives Table [Text Block] Schedule of useful lives. Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Proceeds from issuance of Senior Notes due 2028 Repayments of Long-Term Debt Stock Options [Member] Share-Based Payment Arrangement, Option [Member] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Gross unrealized losses related to individual securities had been in continuous loss position for 12 months or longer Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Accrued distributions to founding members (including accrued payments due to related parties of $4.9 and $0.0, respectively) Noncash Distributions To Founding Members Noncash distributions to founding members. Income tax and other impacts of NCM LLC ownership changes Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Income Tax And Other Impacts Of Subsidiary Ownership Change Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Income Tax And Other Impacts Of Subsidiary Ownership Change Accounts Receivable, Allowance for Credit Loss, Current Less: Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Interest Expense, Other Deferred Tax Asset, Interest Carryforward Common stock, shares authorized (in shares) Common Stock, Shares Authorized Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Maximum Maximum [Member] Cumulative Effect Adjustment for Adoption of ASU 2016-13 Cumulative Effect Adjustment for Adoption of ASU 2016-13, Net Cumulative Effect Adjustment for Adoption of ASU 2016-13, Net Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounting Period Fiscal Period, Policy [Policy Text Block] Tax Year 2021 Tax Year 2021 [Member] Deferred revenue Increase (Decrease) in Contract with Customer, Liability Fair Value, Measurement Frequency Measurement Frequency [Domain] Equity Stockholders' Equity Note Disclosure [Text Block] Term Loan - Second Tranche, Discount Value Term Loan - Second Tranche, Discount Value Term Loan - Second Tranche, Discount Value Common membership units issued, net (in shares) Common Membership Units Issued Net Of Units Surrendered Common membership units issued net of units surrendered. CONSOLIDATED NET LOSS Consolidated net loss Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Consolidated Net Total Leverage Ratio Consolidated Net Total Leverage Ratio Consolidated Net Total Leverage Ratio 2021 Operating Leases, Future Minimum Payments, Due in Four Years Computer Software, Intangible Asset Computer Software, Intangible Asset [Member] Other investments Total other investments Other Long-Term Investments Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document And Entity Information [Abstract] Income tax benefit from share-based compensation Share-Based Payment Arrangement, Expense, Tax Benefit Recently Adopted Accounting Pronouncements Recently Adopted Accounting Pronouncements Policy [Text Block] Recently adopted accounting pronouncements. Number Of Days Utilized Within Membership Unit Redemption Payment Calculation Number Of Days Utilized Within Membership Unit Redemption Payment Calculation Number of days utilized within membership unit redemption payment calculation. Receivables, net Increase (Decrease) in Accounts Receivable Short-term debt, net of debt issuance costs of $7.9 and $0.0, respectively Short-Term Debt Title of 12(b) Security Title of 12(b) Security Schedule of Reconciliation of Unrecognized Tax Benefits, Excluding Interest and Penalties Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Impairment on Investment Impairment on Investment Impairment on Investment Subsequent Events [Line Items] Subsequent Event [Line Items] Local and Regional advertising revenue Local And Regional Advertising Revenue [Member] Local and regional advertising revenue. Concentration of credit risk as a percentage of accounts receivable Concentration of credit risk as a percentage of accounts receivable Concentration of credit risk as a percentage of accounts receivable Purchases of marketable securities Payments to Acquire Available-for-Sale Securities As Reported Previously Reported [Member] Adjustments to Additional Paid in Capital, Other Decrease within activity of APIC Adjustments to Additional Paid in Capital, Other Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Equipment, Computer Hardware And Software [Member] Equipment Computer Hardware And Software [Member] Equipment, computer hardware and software. LIABILITIES AND EQUITY/(DEFICIT) Liabilities and Equity [Abstract] Fair Value [Member] Estimate of Fair Value Measurement [Member] US Treasury Securities US Treasury Securities [Member] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] WEIGHTED AVERAGE SHARES OUTSTANDING: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Accounts payable Accounts Payable, Current Income Tax Authority Income Tax Authority [Axis] Proceeds from sale of common stock Proceeds from Issuance of Common Stock Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Proceeds from Collection of Long-term Loans to Related Parties Proceeds from Collection of Long-Term Loans to Related Parties Ownership percentage Equity Method Investment, Ownership Percentage Long-term marketable securities Aggregate Fair Value - Long term marketable securities Available-for-Sale Securities, Noncurrent Maturities Available For Sale Securities Maturity Available for sale securities maturity. Preferred stock, $0.01 par value; 10,000,000 shares authorized, none issued and outstanding, respectively Preferred Stock, Value, Issued Amount Increase In Payment Per Theater Patron Amount Increase In Payment Per Theater Patron Amount Increase In Payment Per Theater Patron Schedule of Fair Value of Separate Accounts by Major Category of Investment [Table] Fair Value, Separate Account Investment [Table] Restricted Stock [Member] Restricted Stock [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Schedule of Outstanding Debt Schedule of Debt [Table Text Block] Short-term Debt, Type Short-Term Debt, Type [Domain] Administrative Cost General and Administrative Expense [Member] Dividends payable, date to be paid Dividends Payable, Date to be Paid Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Impairment of investment Cost-method Investments, Other than Temporary Impairment Debt instrument issued percentage of face value Debt Instrument Issued Percentage Of Face Value Debt instrument issued percentage of face value. Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Total non-current assets Assets, Noncurrent Assets, Noncurrent Share-Based Compensation Share-Based Payment Arrangement [Text Block] Estimated annual forfeiture rate, percentage Share Based Compensation Arrangement By Share Based Payment Award Estimated Annual Forfeiture Rate Share based compensation arrangement by share based payment award estimated annual forfeiture rate. Accounts Receivable, Allowance for Credit Loss Accounts Receivable, Allowance for Credit Loss Integration payments Cost and other reimbursement Integration Payments Due From Related Parties Integration payments due from related parties. Noncontrolling Interest Noncontrolling Interest [Member] Term Loan Margin Increase Term Loan Interest Rate Increase Following Amendment Term Loan Interest Rate Increase Following Amendment Substantial Doubt about Going Concern Substantial Doubt about Going Concern [Text Block] Debt Instrument, Periodic Payment, Interest Debt Instrument, Periodic Payment, Interest Schedule of Components of Deferred Tax Assets Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Terminating exclusion of performance-based compensation per employee per year limitation Tax Cuts And Jobs Act Of2017 Terminating Exclusion Of Performance Based Compensation Per Employee Per Year Limitation Tax cuts and jobs act of 2017 terminating exclusion of performance-based compensation per employee per year limitation. Interest receivable on notes receivable (included in other current assets) Interest Receivable Related Party [Axis] Related Party [Axis] Repayments of revolving credit facility Repayments of Long-Term Lines of Credit Add: Dilutive effect of stock options, restricted stock, and exchangeable NCM LLC common membership units Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Cumulative Effect Adjustment for Adoption of ASU 2016-13 to NCI Cumulative Effect Adjustment for Adoption of ASU 2016-13 to NCI Cumulative Effect Adjustment for Adoption of ASU 2016-13 to NCI Valuation Allowances and Reserves Type SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] Non-Operating Income [Member] Nonoperating Income (Expense) [Member] Significant Other Observable Inputs (Level 2) [Member] Fair Value, Inputs, Level 2 [Member] Debt Issuance Costs Debt, Policy [Policy Text Block] Prior to August 15, 2019 [Member] Debt Instrument, Redemption, Period One [Member] Current Fiscal Year End Date Current Fiscal Year End Date Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Available-for-Sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Change in accounting principle not related to a new ASU Change In Accounting Principle Not Related To A New Accounting Standards Update [Member] Change In Accounting Principle Not Related To A New Accounting Standards Update [Member] APIC, Share-based Payment Arrangement, Increase for Cost Recognition APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Interest rate on notes receivable Notes Receivable Stated Interest Rate Notes receivable stated interest rate. Concentration Risk Type Concentration Risk Type [Axis] Total current liabilities Liabilities, Current Liabilities, Current Schedule of Receivables Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Available Cash Requirement, Covenant During Waiver Min Available Cash Requirement, Covenant During Waiver Min [Member] Available Cash Requirement, Covenant During Waiver Min Customer Concentration Risk Customer Concentration Risk [Member] NCM, Inc. investment in NCM LLC Adjustments To Additional Paid In Capital, Parent Investment In Subsidiary Adjustments To Additional Paid In Capital, Parent Investment In Subsidiary Income tax payable Accrued Income Taxes, Noncurrent Deferred Tax Asset, Sale Of Membership Units Deferred Tax Asset, Sale Of Membership Units Deferred Tax Asset, Sale Of Membership Units Percentage increase (decrease) in theater attendance for Common Unit adjustment to occur Percentage Increase Decrease In Theater Attendance For Common Unit Adjustment To Occur Percentage change in theater attendance for Common Unit adjustment to occur. Accounts Payable Accounts Payable NCM, LLC. National Cine Media L L C [Member] National CineMedia, LLC. Unrecognized tax benefits Unrecognized Tax Benefits that Would Impact Effective Tax Rate Remaining performance obligation Revenue, Remaining Performance Obligation, Amount Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes [Line Items] NON-OPERATING EXPENSES: Nonoperating Income (Expense) [Abstract] Number of Customer Over Ten Percent of AR Balance Number of Customer Over Ten Percent of AR Balance Number of Customer Over Ten Percent of AR Balance Founding Member Ownership in ACJV, LLC Ownership in ACJV, LLC Ownership in ACJV, LLC Current year change to enacted federal and state rate Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount Income Tax Authority Income Tax Authority [Domain] Founding Member Integration and Encumbered Payments due from Related Parties Founding Member Integration and Encumbered Payments due from Related Parties Founding Member Integration and Encumbered Payments due from Related Parties Disposal Group, Including Discontinued Operation, Intangible Assets Disposals of Intangible Assets, Gross Disposals of Intangible Assets, Gross Unbilled contracts receivable Unbilled Contracts Receivable Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Remaining borrowing capacity of credit facility Line of Credit Facility, Remaining Borrowing Capacity Credit Facility Credit Facility [Axis] Proceeds from sale and maturities of marketable securities Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale Discretionary contributions Defined Contribution Plan, Employer Discretionary Contribution Amount Subsequent Event [Table] Subsequent Event [Table] Number of restricted shares and restricted stock units, Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period change in deferred tax asset [Member] Change in Deferred Tax Asset [Member] Change in Deferred Tax Asset Entity Tax Identification Number Entity Tax Identification Number Common stock available for issuance Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Federal and State Domestic Tax Authority And State And Local Jurisdiction [Member] Domestic Tax Authority And State And Local Jurisdiction [Member] Summary of Restricted Stock Awards and Restricted Stock Units Schedule of Nonvested Share Activity [Table Text Block] Short-term Marketable Securities [Member] Short Term Marketable Securities [Member] Short-term marketable securities. Aggregate Principal Amount, Revolving loans Aggregate Principal Amount, Revolving loans Aggregate Principal Amount, Revolving loans Vested shares withheld to cover tax obligations Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Information Disclosure [Abstract] Maximum potential payment Guarantor Obligations, Maximum Exposure, Undiscounted Schedule of Reconciliation of Provision for Income Taxes Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect State and local income taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Percentage open of theaters in network Percentage of theaters open in network Percentage of theaters open in network Entity Central Index Key Entity Central Index Key Antidilutive Securities, Name Antidilutive Securities, Name [Domain] Finite-Lived Intangible Assets by Major Class Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Entity [Domain] Entity [Domain] City Area Code City Area Code Subtotal Property Plant And Equipment Net Before Construction In Progress Property Plant And Equipment Net Before Construction In Progress ASSETS Assets [Abstract] Incremental Term Loan Rate Incremental Term Loan Rate Incremental Term Loan Rate Change in Accounting Principle Revision of Prior Period, Adjustment [Member] Debt Instrument, Redemption, Period Debt Instrument, Redemption, Period [Axis] Changes in Debt Issuance Costs Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] 2019 Long-Term Debt, Maturity, Year One Supplemental disclosure of non-cash financing and investing activity: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non-cash share-based compensation Share-Based Payment Arrangement, Noncash Expense Weighted average grant date fair value of granted options Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Variable Rate Variable Rate [Axis] Term of advertising services Term Of Advertising Services Term of advertising services. Repayments of term loan facility Repayments of term loan facility Repayments of Senior Debt Other liabilities Other Liabilities, Noncurrent Equity in earnings of non-consolidated entities Income (Loss) from Equity Method Investments Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment 2018 Finite-Lived Intangible Asset, Expected Amortization, Year One Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Promissory notes receivable from founding members Notes Receivable, Related Parties Agreement With Founding Members, Remaining Term Agreement With Founding Members, Remaining Term Agreement With Founding Members, Remaining Term Gain (Loss) on Sale of Assets and Asset Impairment Charges Gain on sale of asset Gain on sale of asset Barter Transaction Revenue Barter Transaction Revenue [Member] Barter Transaction Revenue [Member] 2020 Operating Leases, Future Minimum Payments, Due in Three Years Related Party Transaction, Description of Transaction Related Party Transaction, Description of Transaction Less: Noncontrolling interests Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Amount Purchase of an intangible asset with NCM LLC equity Noncash or Part Noncash Acquisition, Intangible Assets Acquired Additional Tax Payments Additional Tax Payments Additional Tax Payments Proceeds from lessor on purchases of property, plant, and equipment Proceeds From Operating Leases Proceeds From Operating Leases Consolidated net (loss) income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Additional paid in capital (deficit) Additional Paid In Capital And Accumulated Deficit Common Stock Additional paid in capital and accumulated deficit common stock. Payable to founding members under the TRA (related party payables of $25.5 and $11.9, respectively) Long-term payable to founding members under tax receivable agreement Payable To Founding Members Under Tax Sharing Agreement Noncurrent Payable to founding members under tax sharing agreement, noncurrent. Entity Address, Postal Zip Code Entity Address, Postal Zip Code Concentration of Credit Risk and Significant Customers Concentration Of Credit Risk And Significant Customers Policy [Text Block] Disclosure of accounting policy for concentration of credit risk and significant customers. 2020 Long-Term Debt, Maturity, Year Two Expense for early lease termination fee Gain (Loss) on Termination of Lease Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Axis] Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Axis] Increase in cost and equity method investments Increase (Decrease) In Cost And Equity Method Investments Increase (Decrease) In Cost And Equity Method Investments Borrowing amount of credit facility Line of Credit Facility, Maximum Borrowing Capacity Term Loan - First Tranche Term Loan - First Tranche [Member] Term Loan - First Tranche Receivable Receivable [Domain] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction Debt Instrument, Basis Spread on Variable Rates Debt Instrument, Basis Spread on Variable Rates Debt Instrument, Basis Spread on Variable Rates Reversal of unrecognized tax benefits Reversal Of Unrecognized Tax Benefits Reversal of unrecognized tax benefits. Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized Software and Software Development Costs Software and Software Development Costs [Member] Platinum Spot Revenue Percentage Platinum Spot Revenue Percentage Platinum Sport Revenue Percentage CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Range Range [Domain] Statistical Measurement [Domain] Network Costs Network Costs [Member] Network costs. Accrued Reserves Accrued Reserves Accrued reserves. Short Term U.S. Agency Bonds Short Term U.S. Agency Bonds [Member] Short Term U.S. Agency Bonds Short-term Debt, Type Short-Term Debt, Type [Axis] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Share-Based Payment Arrangement [Abstract] Reductions based on the lapse of applicable statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Stock Issued Duing Period, Value, New Issues APIC Stock Issued Duing Period, Value, New Issues APIC Stock Issued Duing Period, Value, New Issues APIC Senior Unsecured Notes Due Two Zero Two Eight Senior Unsecured Notes Due Two Zero Two Eight [Member] Senior Unsecured Notes Due Two Zero Two Eight On or After August 15, 2021 [Member] Debt Instrument, Redemption, Period Three [Member] Federal Domestic Tax Authority [Member] Consolidated Net Senior Secured Leverage Ratio Consolidated Net Senior Secured Leverage Ratio Consolidated Net Senior Secured Leverage Ratio Cash dividends declared Dividends Payable NET LOSS ATTRIBUTABLE TO NCM, INC. Net loss attributable to NCM, Inc. (Loss) Net income attributable to NCM, Inc. Net Income (Loss) Attributable to Parent Schedule of Annual Maturities on Credit Facility and Senior Notes Schedule of Maturities of Long-Term Debt [Table Text Block] Subsequent Event Type Subsequent Event Type [Axis] Tax Period [Domain] Tax Period [Domain] Receivables Accounts Receivable, before Allowance for Credit Loss, Current Term Loan - Second Tranche, Loss on Debt Modification Term Loan - Second Tranche, Loss on Debt Modification Term Loan - Second Tranche, Loss on Debt Modification RedemptionAggregate,Notes2028 RedemptionAggregate,Notes2028 RedemptionAggregate,Notes2028 Scenario [Axis] Scenario [Axis] Debt instrument redemption price percentage Debt Instrument, Redemption Price, Percentage Total assets Assets, Fair Value Disclosure Change in the valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount OtherCFfromOperatingActivities OtherCFfromOperatingActivities OtherCFfromOperatingActivities Share-based compensation expense related to modification of certain former executive equity awards Share-Based Payment Arrangement, Plan Modification, Incremental Cost Plan Name Plan Name [Axis] Stock Issued During Period, Value, New Issues, Consolidated Stock Issued During Period, Value, New Issues, Consolidated Stock Issued During Period, Value, New Issues, Consolidated Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] Fair Value, Inputs, Level 1 [Member] 2019 Operating Leases, Future Minimum Payments, Due in Two Years Achievement of percentage in performance based restricted stock Achievement Of Percentage In Performance Based Restricted Stock Achievement of percentage in performance based restricted stock. Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted Average Number of Shares Outstanding, Basic [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Repayments of Debt, Maturing in More than Three Months Repayments of Debt, Maturing in More than Three Months Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Range of terms, in years Revenue Guarantee Period Revenue guarantee period. Related Party Transaction [Domain] Related Party Transaction [Domain] Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Uncertain tax positions (reversal) Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Credit Facility Availability Compliance Credit Facility Availability Compliance Credit Facility Availability Compliance Percent of compensation participants may contribute Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Options, Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Document Annual Report Document Annual Report Legal Entity [Axis] Legal Entity [Axis] Amounts Due to/from Founding Members Amounts Due To From Founding Members Policy [Text Block] Amounts due to from founding members. Certificates of Deposit Certificates of Deposit [Member] Covenant During Waiver Max [Member] Covenant During Waiver Max [Member] Covenant During Waiver Max Issuance of shares, value Stock Issued During Period, Value, New Issues Vesting description Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights Operating Costs Operating Costs Policy [Text Block] Operating costs. Tax Year 2019 Tax Year 2019 [Member] Summary of Property and Equipment Property, Plant and Equipment [Table Text Block] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Number of Restricted Shares and Restricted Stock Units (1) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Concentration Risk Benchmark Concentration Risk Benchmark [Domain] Segments [Axis] Segments [Axis] Borrowings Debt Disclosure [Text Block] Weighted Average Term, ESA and Affiliate Weighted Average Term, ESA and Affiliate Weighted Average Term, ESA and Affiliate Product and Service [Domain] Product and Service [Domain] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Entity Shell Company Entity Shell Company Incremental Term Loan Incremental Term Loan Incremental Term Loan Aggregate Fair Value - Total marketable securities Available-for-Sale Securities 2021 Long-Term Debt, Maturity, Year Three Adjustments To Additional Paid In Capital, Parent Investment In Subsidiary, net Adjustments To Additional Paid In Capital, Parent Investment In Subsidiary, net Adjustments To Additional Paid In Capital, Parent Investment In Subsidiary, net Valuation Allowances and Reserves SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] Subsequent Event [Member] Subsequent Event [Member] Consolidation Items [Domain] Consolidation Items [Domain] Sales Revenue, Net Revenue Benchmark [Member] Document Period End Date Document Period End Date Schedule of Amounts Due to Founding Members Schedule of Incentive Distributions Made to Managing Members or General Partners by Distribution [Table Text Block] Network costs Network Costs Direct costs arising from transactions associated with network operations. These costs are categorized as cost of goods sold. TOTAL ASSETS TOTAL ASSETS Assets Software And Development Costs Software And Development Costs [Member] Software and development costs. Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations NET LOSS PER NCM, INC. COMMON SHARE: Earnings Per Share [Abstract] Payments for (Proceeds from) Policy Loans Payments for (Proceeds from) Policy Loans Performance Shares Performance Shares [Member] Antidilutive Securities Antidilutive Securities [Axis] Credit Concentration Risk Credit Concentration Risk [Member] Recently Issued Accounting Pronouncements Recently Issued Accounting Pronouncements Policy [Text Block] Recently issued accounting pronouncements. Common membership units surrendered due to required theater transfer, value Value Of Common Membership Units Surrendered For Transferred Theaters Value of common membership units surrendered for transferred theaters. Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Unvested Stock Options [Member] Unvested Stock Options [Member] Unvested stock options. Accrued payroll and related expenses Employee-related Liabilities, Current LOSS BEFORE INCOME TAXES INCOME BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Segments [Domain] Segments [Domain] Long Term Certificates of Deposit [Member] Long Term Certificates of Deposit [Member] Long Term Certificates of Deposit Earnings Per Share Earnings Per Share [Text Block] Cash paid for interest Interest Paid, Including Capitalized Interest, Operating and Investing Activities Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Fair value of awards vested Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value Equity Award [Domain] Award Type [Domain] Gain (Loss) on Extinguishment of Debt Gain (Loss) on Extinguishment of Debt Payments to affiliates for tax sharing agreement Payments To Affiliates For Tax Sharing Agreement Payments to affiliates for tax sharing agreement. Income tax receivable Income Taxes Receivable, Current 2018 and 2022 Revolving Credit Facilities Fair Value 2018 and 2022 Revolving Credit Facilities Fair Value [Member] 2018 and 2022 Revolving Credit Facilities Fair Value CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Issuance of shares, shares Stock Issued During Period, Shares, New Issues Schedule of Other Assets Schedule of Cost Method Investments [Table Text Block] Gain (Loss) On Re Measurement Of Payable To Founding Members Under TRA Gain (Loss) On Re Measurement Of Payable To Founding Members Under TRA Gain (Loss) On Re Measurement Of Payable To Founding Members Under TRA Change of Control Change Of Control [Member] Change of control. Payable to founding members under the TRA (related party payables of $0.2 and $0.0, respectively) Current payable to founding members under tax receivable agreement Payable To Founding Members Under Tax Sharing Agreement Current Payable to founding members under tax sharing agreement, current. Entity Address, City or Town Entity Address, City or Town Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Domain] Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Domain] Weighted Average Remaining Contractual Life (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest [Abstract] Credit Agreement Third Amendment Credit Agreement Third Amendment [Member] Credit Agreement Third Amendment OPERATING EXPENSES: Operating Expenses [Abstract] Deferred Rent Credit, Noncurrent Deferred Rent Credit, Noncurrent Executive compensation Effective Income Tax Rate Reconciliation, Executive Compensation, Amount Effective Income Tax Rate Reconciliation, Executive Compensation, Amount Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Initial credit agreement Initial credit agreement [Member] Initial credit agreement Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Deferred financing costs Beginning balance Ending balance Less: Debt issuance costs and discounts related to term loans and senior notes Debt Issuance Costs, Net Auditor Name Auditor Name Adjustments for New Accounting Pronouncements [Axis] Accounting Standards Update [Axis] Purchase of subsidiary equity with NCM, Inc. equity Noncash or Part Noncash Acquisition, Investments Acquired Net operating loss carryforwards Operating Loss Carryforwards Accrued Rent, Current Accrued Rent, Current Research and development expense Research and Development Expense Senior Secured Notes due 2026 [Axis] Senior Secured Notes due 2026 [Axis] Senior Secured Notes due 2026 Tax Year 2013 Tax Year 2013 [Member] Equipment Equipment [Member] Restricted Stock Units (RSUs) [Member] Restricted Stock Units (RSUs) [Member] Research And Experimentation Tax Credit Carryforward Research Tax Credit Carryforward [Member] Schedule of Mandatory Distributions to Members Distributions Made to Limited Liability Company (LLC) Member, by Distribution [Table Text Block] Cash payment due to founding members/managing member Distributions Payable Distributions Payable Distributions payable. NCM LLC NCM LLC [Member] NCM LLC Accretion of interest on the discounted payable to founding members under the TRA Accretion of interest on the discounted payable to founding members under the TRA Accretion Expense Senior Unsecured Notes Due Two Zero Two Eight [Domain] Senior Unsecured Notes Due Two Zero Two Eight [Domain] Senior Unsecured Notes Due Two Zero Two Eight [Domain] Options, Vested and Expected to Vest (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure LIBOR [Member] London Interbank Offered Rate (LIBOR) [Member] 2018 and 2022 Revolving Credit Facilities Carrying Value 2018 and 2022 Revolving Credit Facilities Carrying Value [Member] 2018 and 2022 Revolving Credit Facilities Carrying Value Revenue Revenues Subsequent Events [Abstract] Subsequent Events [Abstract] Troubled Debt Restructuring, Debtor, Subsequent Periods, Contingent Payments, Name [Domain] Troubled Debt Restructuring, Debtor, Subsequent Periods, Contingent Payments, Name [Domain] Integration and other encumbered theater payments Finite Lived Intangible Assets Integration And Other Encumbered Theater Payments During Period Finite lived intangible assets integration and other encumbered theater payments during period. Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted Deferred State Deferred State and Local Income Tax Expense (Benefit) Measurement period Share Based Compensation Measurement Period Share Based Compensation Measurement Period Dividends payable, date of record Dividends Payable, Date of Record Amortization of Intangible Assets Stock Issued During Period, Shares, New Issues Amortization expense Amortization Amortization of Intangible Assets Cost-method ownership percentage Cost Method Investment Ownership Percentage Cost method investment ownership percentage. 2020 Omnibus Plan 2020 Omnibus Incentive Plan [Member] 2020 Omnibus Incentive Plan Finite-Lived Intangible Assets, Period Increase (Decrease), Affiliate Payments Finite-Lived Intangible Assets, Period Increase (Decrease), Affiliate Payments Finite-Lived Intangible Assets, Period Increase (Decrease), Affiliate Payments Concentration Risk Type Concentration Risk Type [Domain] Selling and marketing costs Selling and Marketing Expense Net senior secured leverage ratio Debt Instrument, Dividend Restriction, Net Senior Secured Leverage Ratio Debt Instrument, Dividend Restriction, Net Senior Secured Leverage Ratio Total NCM, Inc. stockholders’ equity/(deficit) Stockholders' Equity Attributable to Parent Stockholders' Equity Attributable to Parent RevolvingCreditFacilityMember2022 RevolvingCreditFacilityMember2022 [Member] RevolvingCreditFacilityMember2022 Weighted average grant-date fair value, Forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Investment in consolidated subsidiary NCM LLC Deferred tax assets recognized Deferred Tax Assets, Investment in Subsidiaries Vesting [Domain] Vesting [Domain] Other Deferred Tax Assets, Other Net total leverage ratio, covenant Debt Instrument, Covenant, Net Total Leverage Ratio Debt Instrument, Covenant, Net Total Leverage Ratio Common stock, shares sold (in shares) Sale of Stock, Number of Shares Issued in Transaction Finite-Lived Intangible Assets, Accumulated Amortization Accumulated amortization, beginning balance Accumulated amortization, ending balance Finite-Lived Intangible Assets, Accumulated Amortization Deferred Tax Asset [Domain] Deferred Tax Asset [Domain] RevolvingCreditFacilityMember2018 RevolvingCreditFacilityMember2018 [Member] RevolvingCreditFacilityMember2018 2020 Finite-Lived Intangible Asset, Expected Amortization, Year Three Credit Agreement EBITDA Limit Credit Agreement EBITDA Limit Credit Agreement EBITDA Limit 2023 Long-Term Debt, Maturity, Year Five NCM LLC membership unit issuance to NCM, Inc. Income Tax Reconciliation Issuance Of Affiliate Membership Unit Income tax reconciliation issuance of affiliate membership unit. Retained Earnings (Distributions in Excess of Earnings) Retained Earnings Retained Earnings [Member] Cash dividends declared Dividends, Common Stock, Cash Lease, Cost Lease, Cost Capital Loss Carryforward Capital Loss Carryforward [Member] Restricted Stock and Restricted Stock Units Restricted Stock And Restricted Stock Units [Member] Restricted stock and restricted stock units. Common Stock [Member] Common Stock Common Stock [Member] Common stock available for grants Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Network Affiliates Network Affiliates [Member] Network affiliates. Revenue Recognition Revenue [Policy Text Block] Statement [Table] Statement [Table] Net reduction to additional paid in capital Adjustment To Additional Paid In Capital Due To Deferred Tax Asset Liability Adjustment to additional paid in capital due to deferred tax asset liability. Weighted average grant-date fair value, Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Issuance of shares to founding members Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Issuance of Equity by Subsidiary to Noncontrolling Interests Letters of Credit [Member] Letter of Credit [Member] Operating Lease, Liability, Noncurrent Operating Lease, Liability, Noncurrent Range Range [Axis] Statistical Measurement [Axis] Term Loan - Second Tranche Term Loan - Second Tranche [Member] Term Loan - Second Tranche Related Party Transaction [Axis] Related Party Transaction [Axis] Leasehold improvements Leasehold Improvements [Member] Common membership units outstanding Units of Partnership Interest, Amount Receivables, net of allowance of $1.7 and $1.7, respectively Total Accounts Receivable, after Allowance for Credit Loss, Current Equity Components [Axis] Equity Components [Axis] Stock Options And Non-Vested Restricted Stock [Member] Stock Options And Non Vested Restricted Stock [Member] Stock options and non-vested restricted stock. Weighted average exercise price, Expired (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Total Operating Leases, Future Minimum Payments Due Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis] Statement [Line Items] Statement [Line Items] Number of restricted shares and restricted stock units, Non-vested, beginning balance (in shares) Number of restricted shares and restricted stock units, Non-vested, ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Debt instrument, frequency of periodic payment Debt Instrument, Frequency of Periodic Payment Redemption Premium Redemption Premium Total Total non-operating expenses Nonoperating Income (Expense) Variable Rate Variable Rate [Domain] Gross carrying amount, beginning balance Gross carrying amount, ending balance Finite-Lived Intangible Assets, Gross Operating Lease, Right-of-Use Asset Operating Lease, Right-of-Use Asset Vesting percentage for year Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Rights Percentage Per Year Share based compensation arrangement by share based payment award award vesting rights percentage per year. AuditorFirmID Auditor Firm ID Document Transition Report Document Transition Report Local Phone Number Local Phone Number Summary of Option Award Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] OPERATING INCOME (LOSS) Operating Income (Loss) Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] State State and Local Jurisdiction [Member] On-screen advertising time purchased, in seconds Length Of On Screen Advertising Time Which Founding Members Purchased Length of on screen advertising time which founding members purchased. Operating Lease, Lease Income, Lease Payments Operating Lease, Lease Income, Lease Payments Common membership units surrendered to compensate for lost operating income (in shares) Common Membership Units Surrendered To Compensate For Lost Operating Income For Transferred Theaters Common membership units surrendered to compensate for lost operating income for transferred theaters. Proceeds from restricted cash Proceeds From Restricted Stock Proceeds From Restricted Stock Adjustments to reconcile consolidated net loss to net cash used in operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Tax Year 2015 Tax Year 2015 [Member] Long-lived Assets Property, Plant and Equipment, Policy [Policy Text Block] Preferred stock, par value (in usd per share) Preferred Stock, Par or Stated Value Per Share Income Statement [Abstract] Income Statement [Abstract] Deferred Federal Deferred Federal Income Tax Expense (Benefit) Additional Paid in Capital (Deficit) Additional Paid In Capital (Deficit) Additional Paid-in Capital [Member] Document Fiscal Period Focus Document Fiscal Period Focus Short-term Certificates of Deposit Short-term Certificates of Deposit [Member] Short-term Certificates of Deposit Intrinsic value of options exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value TotalLeaseLiability TotalLeaseLiability TotalLeaseLiability Beverage Concessionaire Beverage Concessionaire [Member] Beverage concessionaire. Diluted (in shares) Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Nonoperating gain (loss) related to debt issuance costs Nonoperating Gain (Loss) Related To Debt Issuance Costs Nonoperating Gain (Loss) Related To Debt Issuance Costs Intangible Assets Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Amortization rate Debt Instrument, Amortization Rate Debt Instrument, Amortization Rate Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Senior Secured Notes Due Two Zero Two Eight [Member] [Domain] Senior Secured Notes Due Two Zero Two Eight [Member] [Domain] [Domain] for Senior Secured Notes Due Two Zero Two Eight [Member] [Axis] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Debt issuance costs Debt Issuance Costs, Gross Base Rate [Member] Base Rate [Member] 2019 ESA Amendment Year Extension 2019 ESA Amendment Year Extension 2019 ESA Amendment Year Extension Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Carrying Value [Member] Reported Value Measurement [Member] Weighted average grant-date fair value, Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value American Multi Cinema Acquisition Of Carmike Cinemas Inc American Multi Cinema Acquisition Of Carmike Cinemas Inc [Member] American Multi Cinema acquisition of Carmike Cinemas Inc. Amendments to Credit Agreement [Axis] Amendments to Credit Agreement [Axis] Amendments to Credit Agreement Short-term Lease, Cost Short-Term Lease, Cost Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized OtherCFfromInvestingActivities OtherCFfromInvestingActivities OtherCFfromInvestingActivities AMC and Cinemark American Multi Cinema Inc And Cinemark Holdings Inc [Member] American Multi-Cinema, Inc. and Cinemark Holdings, Inc. Less:  Net loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Reduction in Valuation Allowance from Investment in NCM LLC Deferred Tax Asset Reduction in Valuation Allowance from Investment in NCM LLC Deferred Tax Asset Reduction in Valuation Allowance from Investment in NCM LLC Deferred Tax Asset Common stock, shares issued (in shares) Common Stock, Shares, Issued Investment in AC JV, LLC Equity Method Investments Valuation allowance reversed Valuation Allowances And Reserves Charged And Reversed To Other Accounts Valuation allowances and reserves charged and reversed to other accounts. National advertising revenue National Advertising Revenue [Member] National advertising revenue. Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Deferred Tax Assets, Valuation Allowance, Net Deferred Tax Assets, Valuation Allowance, Net Deferred Tax Assets, Valuation Allowance, Net Debt instrument face amount Debt Instrument, Face Amount Issuance of revolving credit facility Proceeds from Long-Term Lines of Credit COMPREHENSIVE LOSS ATTRIBUTABLE TO NCM, INC. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Liabilities recorded for related party obligations Guarantor Obligations, Current Carrying Value Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations Entity Current Reporting Status Entity Current Reporting Status Other Liabilities, Current Other Liabilities, Current Loss on write-off of property, plant and equipment Tangible Asset Impairment Charges Nonrecurring Adjustment [Axis] Nonrecurring Adjustment [Axis] NCM LLC equity issued for purchase of intangible asset Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Issuance Of Equity For Purchase Of Intangible Asset Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Issuance Of Equity For Purchase Of Intangible Asset Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Repayments of Notes Payable Repayments of Notes Payable U.S. federal statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Cash dividends declared, per share Dividends Payable, Amount Per Share SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense Options, Outstanding, beginning balance (in shares) Options, Outstanding, ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Senior Secured Financial Covenant Ratio Senior Secured Financial Covenant Ratio to Make Distributions Senior Secured Financial Covenant Leverage Ratio Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Beginning retained earnings, as of December 29, 2016 – as adjusted Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance (Deprecated 2020) Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Property and equipment, net of accumulated depreciation of $54.8 and $59.9, respectively Net book value Total property and equipment Property, Plant and Equipment, Net Negative Distributions Made to Limited Liability Company Negative Distributions Made to Limited Liability Company Negative Distributions Made to Limited Liability Company Term Loan Second Tranche Term Loan Second Tranche Term Loan Second Tranche Summary of Estimated Aggregate Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Quarterly Financial Data Quarterly Financial Information [Text Block] Increase (decrease) in intangible assets, net Finite-Lived Intangible Assets, Period Increase (Decrease) Selling and Marketing Costs Selling and Marketing Expense [Member] Write Off of Equipment Write Off of Equipment Write Off of Equipment Loss (gain) on re-measurement of the payable to founding members under the TRA Gain on re-measurement of the payable to founding members under the TRA Loss (gain) on re-measurement of the payable to founding members under the TRA Gain (Loss) On Re Measurement Of Payable To Founding Members Under Tax Sharing Agreement Gain (loss) on re-measurement of payable to founding members under tax sharing agreement. Debt Instrument, Redemption, Period Debt Instrument, Redemption, Period [Domain] Number of restricted shares and restricted stock units, Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Long-term Debt Total Long-Term Debt Net income attributable to NCM, Inc. following    conversion of dilutive membership units (in millions) Net Income (Loss) Attributable to Parent, Diluted Other non-operating income, net Other Nonoperating Income (Expense) Basis of Presentation and Summary of Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Income attributable to NCM, Inc. Income Tax Reconciliation Income Tax Expense Excluding Minority Interest Income Tax Reconciliation Income Tax Expense Excluding Minority Interest NON-CURRENT ASSETS: Assets, Noncurrent [Abstract] Line of Credit Facility, Fair Value of Amount Outstanding Line of Credit Facility, Fair Value of Amount Outstanding Debt instrument redemption description Debt Instrument, Redemption, Description Restricted Cash and Cash Equivalents Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Total lease expense Operating Leases, Rent Expense Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Cash distributions declared to members Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Declared Total current assets Assets, Current Assets, Current Maturity date Debt Instrument, Maturity Date Cash paid for income taxes, net of refunds Income Taxes Paid, Net Amounts due to founding members, net Increase (Decrease) in Due to Related Parties, Current Entity Small Business Entity Small Business Tax effect measurement extension period Tax Cuts And Jobs Act Of2017 Measurement Maximum Extension Period Tax cuts and jobs act of 2017 measurement maximum extension period. Measurement Basis Measurement Basis [Axis] Other Commitments [Table] Other Commitments [Table] Dividends declared per common share (in usd per share) Dividends per share Common Stock, Dividends, Per Share, Declared Intangible assets, net of accumulated amortization of $270.2 and $245.6, respectively Intangible assets, net of accumulated amortization Total intangible assets, net, beginning balance Total intangible assets, net, ending balance Finite-Lived Intangible Assets, Net Term Loan - Second Tranche, Debt Issuance Costs Term Loan - Second Tranche, Debt Issuance Costs Term Loan - Second Tranche, Debt Issuance Costs ACJV Cash Distributions ACJV Cash Distributions ACJV Cash Distributions Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Restricted Cash Restricted Cash Fair Values of the Company's Assets Fair Value, Assets Measured on Recurring Basis [Table Text Block] Unrecognized compensation expense related to non-vested options Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Change from net loss attributable to NCM, Inc. and transfers from noncontrolling interests Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net Nonrecurring Adjustment [Domain] Nonrecurring Adjustment [Domain] Property, Plant and Equipment, Type Long-Lived Tangible Asset [Domain] Outstanding Credit Facility Waiver Limit Outstanding Credit Facility Waiver Limit Outstanding Credit Facility Waiver Limit Repurchase amount Debt Instrument, Repurchase Amount Total Operating expenses Costs and Expenses Income Taxes [Table] Income Taxes [Table] Income Taxes [Table] Payables and Accruals [Abstract] Payables and Accruals [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend Debt Instrument [Line Items] Debt Instrument [Line Items] Class of Stock [Line Items] Class of Stock [Line Items] Share-based compensation issued, shares Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Payment of debt issuance costs Payments of Debt Issuance Costs U.S. Government Agency Bonds US Government Agencies Debt Securities [Member] Operating Lease, Liability Operating Lease, Liability SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Beginning Balance SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Ending Balance SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Share-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Interest income from notes receivable (included in interest income) Interest Income, Related Party 2019 Finite-Lived Intangible Asset, Expected Amortization, Year Two Tax Year 2016 Tax Year 2017 Tax Year 2017 [Member] Payments to Acquire Intangible Assets Purchase of intangible assets from affiliate Payments to Acquire Intangible Assets Capitalized Implementation Costs Depreciation Capitalized Implementation Costs Depreciation Capitalized Implementation Costs Depreciation Other, net Other Expenses Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Increase in Income Tax Expense caused by Valuation Allowance Increase in Income Tax Expense due to Increase in Valuation Allowance Increase in Income Tax Expense due to Increase in Valuation Allowance Fair value of cost method investment Cost Method Investments, Fair Value Disclosure AMC American Multi Cinema Inc [Member] American Multi-Cinema, Inc. 2022 Long-Term Debt, Maturity, Year Four AuditorLocation Auditor Location Write-off of debt issuance costs Write off of Deferred Debt Issuance Cost Write off of Deferred Debt Issuance Cost Retained Earnings RAAP Adjustment 2016-13 [Member] Retained Earnings RAAP Adjustment 2016-13 [Member] Retained Earnings RAAP Adjustment 2016-13 Covenant During Waiver Min [Member] Covenant During Waiver Min [Member] Covenant During Waiver Min Units of Partnership Interest, Amount - Regal Units of Partnership Interest, Amount - Regal Units of Partnership Interest, Amount - Regal Entity Filer Category Entity Filer Category NCM, Inc. Stockholders’ Equity/(Deficit): Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Current Federal Current Federal Tax Expense (Benefit) Tax Year 2017 Tax Year 2018 [Member] Accounting Policies [Line Items] Accounting Policies [Line Items] Accounting policies. Retained Earnings Adjustment 2016-13 [Member] Retained Earnings Adjustment 2016-13 [Member] Retained Earnings Adjustment 2016-13 Recognized share-based compensation expense Total share-based compensation costs Share-Based Payment Arrangement, Expense COMMITMENTS AND CONTINGENCIES (NOTE 13) Commitments and Contingencies Security Exchange Name Security Exchange Name Weighted Average Exercise Price, Outstanding, beginning balance (in dollars per share) Weighted average exercise price, Outstanding, ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Reduction in net deferred tax asset Tax Cuts And Jobs Act Change In Tax Rate Reduction Of Net Deferred Tax Assets Tax cuts and jobs act, change in tax rate, reduction of net deferred tax assets, Schedule of Quarterly Financial Data Quarterly Financial Information [Table Text Block] Credit Agreement Second Amendment Credit Agreement Second Amendment [Member] Credit Agreement Second Amendment Senior secured notes due 2028 Senior Unsecured Notes Due Two Zero Two Six [Member] Senior unsecured notes due two zero two six. Revenue (including revenue from related parties of $14.4 and $8.8, respectively) Revenue Revenue from Contract with Customer, Excluding Assessed Tax RelatedPartyTRAPayment,Regal RelatedPartyTRAPayment,Regal RelatedPartyTRAPayment,Regal Valuation Allowance On Deferred Tax Assets [Member] SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] Dividends payable, date declared Dividends Payable, Date Declared Senior Secured Notes due 2026 [Domain] Senior Secured Notes due 2026 [Domain] Senior Secured Notes due 2026 [Domain] NON-CURRENT LIABILITIES: Liabilities, Noncurrent [Abstract] Entity Voluntary Filers Entity Voluntary Filers Number of NCM LLC common units converted to NCM Inc.common stock Number Of Common Units Converted To Common Stock Number of common units converted to common stock. Depreciation expense Depreciation, Depletion and Amortization, Nonproduction ImputedInterestFutureLeasePayments ImputedInterestFutureLeasePayments ImputedInterestFutureLeasePayments Finite-Lived Intangible Assets, Costs Incured to Renew o Extend, Gross Capitalized Implementation Costs Capitalized Implementation Costs Revenue from Contracts with Customers Revenue from Contract with Customer [Text Block] Non-cash loss (gain) on re-measurement of the payable to founding members under the TRA Non Cash Gain Loss On Re Measurement Of Payable To Founding Members Under Tax Sharing Agreement Non-cash gain (loss) on re-measurement of payable to founding members under tax sharing agreement. Percentage Of Increase in Payment Per Theater Patron - National CineMedia LLC Percentage Of Increase in Payment Per Theater Patron - National CineMedia LLC Percentage Of Increase in Payment Per Theater Patron - National CineMedia LLC Prior to August 15, 2021 [Member] Debt Instrument, Redemption, Period Two [Member] Investments Investments [Domain] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Common membership units surrendered (n shares) Common Membership Units Surrendered Due To Transferred Theaters Common membership units surrendered due to transferred theaters. Repurchase of stock for restricted stock tax withholding Payment, Tax Withholding, Share-Based Payment Arrangement TOTAL LIABILITIES AND EQUITY/DEFICIT TOTAL LIABILITIES AND EQUITY/DEFICIT Liabilities and Equity Cash distributions from non-consolidated entities Cash distributions received from non-consolidated entities Cash Distributions From Non Consolidated Entities Cash distributions from non-consolidated entities. Amortization of debt issuance costs Amortization of debt issuance costs Amortization of Debt Issuance Costs Long-term Debt, Type Long-Term Debt, Type [Axis] Cash dividends on shares of NMC Inc Investment Income, Dividend Operating loss carryforward, expiration date Operating Loss Carryforwards, Expiration Date Total gross deferred tax assets Deferred Tax Assets, Gross Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Schedule of Marketable Securities Available-for-Sale Securities [Table Text Block] Unrecognized tax benefits, payment of interest and penalties accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Accrued Expenses Accounts Payable and Accrued Liabilities Disclosure [Text Block] Long-term notes receivable, net of current portion - founding members Long-term portion of note receivable - founding members Financing Receivable, after Allowance for Credit Loss, Noncurrent Vesting [Axis] Vesting [Axis] Diluted (in usd per share) (Loss) Earnings per NCM, Inc. share, diluted Earnings Per Share, Diluted Share-based compensation, vesting period Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Consolidation Items [Axis] Consolidation Items [Axis] Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Senior secured credit facility. Prepaid expenses and other current assets Other Assets, Current Schedule of Available-for-sale Securities [Table] Schedule of Available-for-Sale Securities [Table] Balance at beginning of period Balance at end of period Unrecognized Tax Benefits Total deferred tax assets, net of valuation allowance Deferred Tax Assets, Net of Valuation Allowance Senior Notes Due Two Zero Two Two [Member] Senior Notes Due Two Zero Two Two [Member] Senior notes due two zero two two. Tax Cuts and Jobs Act, Measurement Period Adjustment, Income Tax Expense (Benefit) Tax Cuts and Jobs Act, Measurement Period Adjustment, Income Tax Expense (Benefit) (Deprecated 2022) Unused line fee, percent Line of Credit Facility, Commitment Fee Percentage Percentage of increase in payment per theatre patron Percentage Of Increase In Payment Per Theater Patron Percentage of increase in payment per theater patron. Entity Address, Address Line One Entity Address, Address Line One Blended state and federal tax rate Effective Income Tax Rate Reconciliation Blended State And Federal Income Taxes Effective income tax rate reconciliation blended state and federal income taxes. Capitalized share-based compensation expense Share-Based Payment Arrangement, Amount Capitalized Product and Service [Axis] Product and Service [Axis] Class of Stock [Domain] Class of Stock Class of Stock [Domain] Amortization of Leased Asset Amortization of Leased Asset Schedule Of Accrued Expenses Schedule of Accrued Liabilities [Table Text Block] Common membership units surrendered due to required theater transfer (in shares) Common Membership Units Surrendered Due To Required Theater Transfer Common membership units surrendered due to required theater transfer. Percentage of common membership units outstanding Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest Term Loan - Second Tranche, Net Term Loan - Second Tranche, Net Term Loan - Second Tranche, Net Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Reduction to Deferred Tax Asset Reduction to Payable to Founding Members Reduction to Payable to Founding Members Accumulated Depreciation, Depletion and Amortization, Property, Plant and Equipment, Period Increase (Decrease) Property, Plant, and Equipment, Owned, Accumulated Depreciation Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Founding member integration payments and other encumbered theater payments Proceeds From Integration And Other Encumbered Theater Payments Made By Affiliates Proceeds From Integration And Other Encumbered Theater Payments Made By Affiliates Payments received from related parties for their acquired theatres that are subject to an existing on-screen advertising contract. Valuation and Qualifying Accounts SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Commercial Paper Commercial Paper [Member] 2022 Finite-Lived Intangible Asset, Expected Amortization, Year Five Accrued purchases of property and equipment Noncash or Part Noncash Acquisition, Fixed Assets Acquired Measurement Frequency Measurement Frequency [Axis] SEC Schedule, 12-09, Allowance, Credit Loss [Member] SEC Schedule, 12-09, Allowance, Credit Loss [Member] Weighted Average Grant-Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] NCM Inc. [Member] National Cine Media Inc [Member] National CineMedia, Inc. Tax Period [Axis] Tax Period [Axis] Other accrued expenses Other Accrued Liabilities, Current Type of Adoption [Domain] Accounting Standards Update [Domain] Administrative and other costs General and Administrative Expense Impairment of Intangible Assets (Excluding Goodwill) Impairment of Intangible Assets (Excluding Goodwill) Debt Issuance Costs, Noncurrent, Net Debt Issuance Costs, Noncurrent, Net Long-term Debt, Type Long-Term Debt, Type [Domain] Retirement Benefits [Abstract] Retirement Benefits [Abstract] Other Commitments [Line Items] Other Commitments [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Income before income taxes Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Advertising Cost, Policy, Expensed Advertising Cost [Policy Text Block] Advertising Cost [Policy Text Block] Amounts due to founding members, net (related party payables of $15.2 and $11.4, respectively) Due to Related Parties, Current Reduction in deferred tax assets Decrease In Deferred Tax Assets Decrease in deferred tax assets. Uncollectible Receivables [Member] Uncollectible Receivables [Member] Impairment on Investment Remaining Balance Impairment on Investment Remaining Balance Impairment on Investment Remaining Balance Dividend payments during period upon vesting of stock units Dividend Payments During Period Upon Vesting Of Stock Units Dividend payments during period upon vesting of stock units. Theater access fees and revenue share to founding members (including fees to related parties of $59.4 and $34.3, respectively) Theater Access Fees and revenue share Theater Access Fees and revenue share Asset Impairment Charges Asset Impairment Charges Accrued integration and other encumbered theater payments from founding members (including accrued payments due from related parties of $0.0 and $0.0, respectively) Accrued Integration And Other Encumbered Theater Payments Due From Founding Members Accrued Integration And Other Encumbered Theater Payments Due From Founding Members Accrued integration and other encumbered theater payments due from founding members. Contract with Customer, Liability, New Contract Liabilities Contract with Customer, Liability, New Contract Liabilities Contract with Customer, Liability, New Contract Liabilities Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] AC JV, LLC [Member] A C J V L L C [Member] AC JV, LLC. Available Cash Requirement, Covenant During Waiver Max Available Cash Requirement, Covenant During Waiver Max [Member] Available Cash Requirement, Covenant During Waiver Max Accrued dividend Accrued Dividends Accrued dividends.